Commercial sites add load constantly. A new piece of kitchen equipment, a server rack relocation, an extra desk pod in an open-plan office, a coffee cart in the foyer: each one needs a circuit rated for the job, fed from the right board, and certified. Millar Electrics installs commercial GPOs, dedicated circuits and three-phase power points across Melbourne's eastern suburbs, with the install scheduled around trading and the paperwork done before we leave.
Sizing circuits for commercial loads
The starting question on any commercial circuit isn't "what plug does it need" but the equipment's plate rating, its inrush, and whether it'll run alongside other loads on the same board. Hospitality and food-service equipment, server-rack power, induction-cooktop kitchens and EV chargers all want their own dedicated circuits, and most warrant a circuit-level RCBO rather than a shared RCD. Where the existing switchboard has no spare ways, we extend the sub-board cleanly rather than stacking adapters or doubling up circuits on an already loaded breaker.
In-floor power and open-plan offices
Open-plan offices live and die by where the power and data come up out of the floor. We install flush Clipsal or HPM floor boxes off a tenancy sub-board, with power and data cores in the same trench, and bring the run back to the comms cabinet without a forest of cable trays. The result is a tenancy you can rearrange without rewiring: desks move, the floor boxes don't.
Three-phase, industrial and after-hours work
For industrial sites such as workshops, manufacturing and small-bay tenancies, we install three-phase power points (32A, 40A and 5-pin sockets) matched to the machinery's nameplate and motor-starting current. Most commercial install work happens after hours or in low-trading windows: the work is staged so adjacent tenancies aren't affected, the board isolation is coordinated with the building manager, and the site opens for trade the next morning.
Standards we work to
New circuits and additional GPOs are installed to AS/NZS 3000, with socket outlets meeting AS/NZS 3112 for general-purpose outlets and AS/NZS 3123 for the heavy-duty industrial types. Cable sizing is calculated under AS/NZS 3008 for the run length, ambient temperature and circuit current. RCD protection on new final sub-circuits is required by AS/NZS 3000. Three-phase power points and isolation arrangements for machinery follow the AS/NZS 60947 low-voltage switchgear series, and sub-board surge protection is specified for the site's exposure level.